Apparatus for drawing pump-rods from wells



No. 6l8,34i. Patented Jan. 24, I899.

J. E. GARVER.

APPARATUS FOR DRAWING PUMP RODS FROM WELLS.

(Application filed June 2, 1898.)

(No Model.) 2 Sheets-Sheet l.

WITNESSES: J i i IN VENTOR u B) I 1 jg A7TOHNEY8.

No. 6l8,34l. Patentd Jan. 24, 1899. J. E. GARVER.

APPARATUS FOR DRAWING'PUMP RODS FROM WELLS.

(Application filed June 2, 1898.)

(No Model.) 2 Sheeis-Shaet 2.

A TTOHNEY W/ T/VESSES ms NORRIS PETERS co. PHOTO-LUNG mswmamn. uv c NrrED STATES JOSEPH E. GARVER, OF

PATENT men.

ROLLERSVILLE, OHIO.

SPECIFICATION forming part of Letters Patent No. 618,341, dated January 24, 1899. Application filed June 2, 1898. Serial No. 682,357. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH E. GARVER, of Rollersville, in the county of Sandusky and State of Ohio, have invented a new and Improved Apparatus for Drawing Pump-Rods from Wells, of which the following is a full, clear, and exact description.

This invention relates to an improved apparatus for drawing pump-rods from wells, such as oil-wells. In oil-fields it is often necessary for repairing or cleaning to draw the pump-rod, made in sections, from the well. This is usually done by means of a Windlass operated by a horse-power, which is not only slow, but is inconvenient, especially in the rainy or muddy season.

The object of my invention is to provide a means whereby the usual pump power may be employed for raising the rods-that is, I employ the horizontal movement of the rod or cable operated by the pumping power to rotate a winding-drum from which a rope extends to a connection with the rod to be drawn.

1 will describe an apparatus embodying my invention, and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of a tower or derrick with the apparatus embodying myimprovement at the base. Fig. 2 is a section on the line 2 2 of Fig. 3. Fig. 3 is a section on the line 3 3 of Fig. 2.

Referring to the drawings, 1 designates a winding-drum located at the base of the derrick or tower 2. At one end of this drum is a brake-wheel 3, around which a brake-band 4: extends, this brake-band being secured at one end to a fixed portion of the derrick and at the other end connected to a crank 5, operated by a lever 6. On the drum 1 is an annular row of ratchet-teeth 7, designed to be engaged by a horizontally-movable rack to impart a rotary movement to the drum, which by winding the rope or cable 8, extended upward and over a pulley 0 at the top of the derrick and then downward to the rod 10, connected therewith, will draw the rod out of the well.

The rack consists of a series of teeth 11,

sides of the ratchet-teeth the drum is provided with annular channels 13, in which the lower edges of the side portions of the boxing engage. The upper portions of the teeth have upwardlyextended shanks 14, which project through slots formed in a plate 15, which is adapted to have a slight horizontal movement relatively to the boxing. The boxing carrying the rack-teeth is held in position on the drum by means of a roller 16, which engages on the top edges of the side portions of the boxing and has its shaft-bearings in metal strips 17, which extend around the drum. As here shown, these strips are seated in annular channels formed in the drum. The plate 15 may be termed a shifting-plate for the rack-teeththat is, by its movement the said teeth are thrown into and out of operative position.

Extended forward from the plate 15 and through an opening in the forward end of the boxing is a shank 18, having a downwardlyextended portion 19, from which a loop 20 extends to a connection with the rocking post 21. A ring 22 is connected to the front end of the boxing 12 and is extended through the loop 20. Therefore it will be seen that the plate 15 will have a slight lost motion relatively to the boxing. From the rear end of the plate 15 a rope or cable 23 extends over a pulley 24, mounted on the end of the boxing, and to the lower end of this cable a weight 25 is attached.

To preventa backward rotation of the drum While operating to draw a rod, a dog 26 is employed. This dog is in the form of a pin movable through an opening in a casting attached to the upper end of a swinging post 27, and it is held yieldingly against the teeth 7 by means of a spring 28, secured to the post and engaging against the pin or dog. Extended outward from the post 27 is a lever 29, designed to be engaged in any one of a series of notchesin a holding-post 29 to hold the post and dog in position.

Leading from the usual pumping power is a pump rod or cable 30. This rod or cable connects with a collar 31,vertically adjustable on the rocking post 21. The collar may be held as adjusted by means of a set-screw 32. The object of making the collar adjustable on the post is to provide for a greater or less rocking motion of said post.

In operation as drawing strain is imparted to the rope or cable 30 the post 21 will be rocked forward, and the first movement of this post will draw the plate and cause the rack-teeth to assume their substantially vertical or operative position, as indicated in full lines in Fig. 2. Then as the ring 22 engages with the end wall of the loop the boxing, with the rack, will be drawn forward and impart a rotary motion to the drum. As the post 21 swings back, the weight 25 will draw the plate 15 rearward which will move or swing the rack-teeth'to the position indicated in dotted lines in Fig. 2, so that as the boxing and the rack move rearward the said rackteeth will not engage with the rachet-teeth. After drawing out a section of the pipe and disconnecting it from the next lower section the lever 29 maybe released to allow the dog 26 to be moved out of the line of movement of the rack-teeth. Then the section of rod may be lowered, the speed of which may be regulated by the brake-wheel and brake-band.

Then the boxing carrying the rack-teeth is in its extreme rearward position, the weight 25 may be lifted by a lever or other suitable means, so that the teeth 11 may fall by gravity to their operative position, allowing the extreme forward tooth 11 to engage With a tooth '7, thus permitting the rack to work throughout its entire length.

W'h eniron or wooden rods are employed, their backward motion will swing the post 21, which will return the rack to its starting position. lVhen a cable is used, howevelythere will be an iron or wooden bar connection between it and the post 21, and this connection will be engaged by a swinging weighted box 30.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. An apparatus for drawing pump-rods from wells, comprising a winding-drum, ratchet-teeth on the said drum, a boxing movable across the said drum, swinging rackteeth mounted in said boxing and adapted for engagement with the ratchet-teeth, means for swinging said rack-teeth into operative position, means for swinging said rack-teeth into inoperative position, means for moving the boxing with the rack across the drum, a roller engaging with the top of the boxing, and straps engaging around the drum and having bearings for the journals of the roller,- substantially as specified.

2. An apparatus for drawing pump-rods from Wells, comprising a winding drum, ratchet-teeth on said drum, a boxing movable transversely of said drum, rack-teeth mounted to swing in said boxing and adapted to engage with the ratchet-teeth, a plate movable relatively to said boxing and longitudinally thereof, the said plate having openings through which upwardly-extended portions of the rack extend, a rocking post operated by a pumping power, aconnection between said post and the shifting-plate, a connection between the boxing and the shifting-plate connecting with the rocking post, and a weight-suspending rope or cable having connection with the rear end of the shifting plate, substantially as specified.

3. An apparatus for drawing pump -rods from wells, comprising a winding drum, ratchet-teeth on said winding-drum, a boxing movable transversely of the drum and having its side portions seated in side channels formed in the side of the drum, rackteeth mounted to swing in the boxing, a shifting-plate movable on the boxing and having openings through which upward extensions of the rack-teeth project, a roller engaging with the upper side of the boxing and having its hearings in straps extended around the drum, a rocking post adapted for connection with a pump power, rod or cable, a loop,havin g connection between the shiftingplate and said post, a ring attached to the forward end of the boxing and passed through said loop, a cable attached to the rear end of the said plate and passed over a pulley on the boxing, a weight on the lower end of said cable, and a holding-dog for engagement with the ratchet-teeth, substantially as specified.

JOSEPH E. GARVER.

Witnesses:

J. L. HART, E. R. VOORHEES. 

